Problem 4. Let A be an n x n matrix such that A² (a) What is det A? (b) What is A-¹? = I, where I is the n x n identity matrix.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter5: Orthogonality
Section5.3: The Gram-schmidt Process And The Qr Factorization
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Problem 4. Let A be an n x n matrix such that A²
(a) What is det A?
(b) What is A-¹?
= I, where I is the n x n identity matrix.
Transcribed Image Text:Problem 4. Let A be an n x n matrix such that A² (a) What is det A? (b) What is A-¹? = I, where I is the n x n identity matrix.
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